南昌市2021年春季大气VOCs污染特征和来源分析

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Abstract Total of 114 volatile organic compounds(VOCs) were measured by AQMS-900 VCM online monitoring system from February to April 2021 in Nanchang. We analyzed concentration and diurnal variations of VOCs species, estimated the Ozone formation potential(OFP) by various VOCs, and explored the possible sources of VOCs by Positive Matrix Factorization(PMF) model. The volume concentration of total VOCs(TVOCs) in Nanchang spring was(146±40.1)×10^-9. Alkanes, oxygenated volatile organic compounds(OVOCs) and halogenated hydrocarbons were the main contributors of VOCs, accounting for(56.6±19.1)%,(14.9±6.13)% and(14.8±5.12)% of TVOCs, respectively. Daily TVOCs concentrations were higher than those during night,suggested the influences of human activities on TVOCs. The estimated OFP was mainly affected by alkanes, aromatic hydrocarbons and OVOCs, and their potential contributions to ozone generation were 36.0%, 29.5% and 23.0%, respectively. PMF results showed that combustion source(22.5%), natural source(22.1%), oil and gas volatilization source(21.1%), motor vehicle emission source(17.7%) and solvent use and industrial source(16.6%) were the main sources of atmospheric VOCs in Nanchang in spring of 2021.

Key words： VOCs ozone formation potential source apportionment Nanchang City Spring

Received: 25 July 2021

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X513

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	Articles by authors
	ZHANG Hao-ran
	LIU Min
	WANG Xiao-man
	YANG Shu-di
	LI Yu-xiao
	LUO Li

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ZHANG Hao-ran,LIU Min,WANG Xiao-man等. Characteristics and sources of atmospheric VOCs during spring of 2021 in Nanchang[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(3): 1040-1047.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I3/1040

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